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Myelin Oligodendrocyte Glycoprotein (MOG35-55) Induced Experimental Autoimmune Encephalomyelitis (EAE) in C57BL/6 Mice
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Myelin basic protein reactive Th2 T cells are found in acute disseminated encephalomyelitis

A Pohl-Koppe1, S K Burchett, E A Thiele

  • 1Center for Neurologic Diseases, Department of Neurology, Brigham and Womens's Hospital, Harvard Medical School, Boston, MA 02115-5817, USA.

Journal of Neuroimmunology
|December 10, 1998
PubMed

Insights

Acute disseminated encephalomyelitis (ADEM) involves autoimmune responses. Researchers found increased myelin basic protein (MBP)-reactive T cells secreting Interleukin-4 (IL-4) in ADEM patients, suggesting a role in recovery.

Area of Science:

  • Neuroimmunology
  • Autoimmune diseases of the central nervous system (CNS)

Background:

  • Acute disseminated encephalomyelitis (ADEM) is a postinfectious autoimmune condition affecting the CNS.
  • The specific immune mechanisms underlying ADEM, particularly T cell responses to myelin antigens, require further elucidation.

Purpose of the Study:

  • To characterize the cytokine profiles of myelin-reactive T cells in patients diagnosed with ADEM.
  • To investigate the frequency and cytokine secretion patterns of T cells specific for myelin basic protein (MBP) in ADEM.

Main Methods:

  • Generation and characterization of myelin basic protein (MBP)-reactive T cell lines from ADEM patients and control subjects.
  • Quantification of cytokine secretion (e.g., IFN-gamma, IL-4) from these T cell lines.

Main Results:

  • A ten-fold higher frequency of MBP-reactive T cell lines was observed in ADEM patients compared to encephalitis patients and healthy controls.
  • MBP-reactive T cells from ADEM patients predominantly secreted Interleukin-4 (IL-4), with minimal Interferon-gamma (IFN-gamma) secretion.
  • IL-4 secretion by MBP-reactive T cells was rare in control groups.

Conclusions:

  • The findings suggest a distinct autoimmune response in ADEM characterized by a high frequency of IL-4 secreting MBP-reactive T cells.
  • This IL-4 dominant response during ADEM recovery may mirror mechanisms observed in experimental autoimmune encephalomyelitis (EAE) recovery.

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